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      <subfield code="a">Burillo Puig, Josep</subfield>
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      <subfield code="a">Cleary, Sean</subfield>
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      <subfield code="a">Stein, Melanie</subfield>
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      <subfield code="a">Taback, Jennifer</subfield>
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      <subfield code="a">Centre de Recerca Matemàtica</subfield>
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      <subfield code="a">We discuss metric and combinatorial properties of Thompson's group T, such as the normal forms for elements and uniqueness of tree pair diagrams. We relate these properties to those of Thompson's group F when possible, and highlight combinatorial differences between the two groups. We define a set of unique normal forms for elements of T arising from minimal factorizations of elements into convenient pieces. We show that the number of carets in a reduced representative of T estimates the word length, that F is undistorted in T, and that cyclic subgroups of T are undistorted. We show that every element of T has a power which is conjugate to an element of F and describe how to recognize torsion elements in T.</subfield>
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      <subfield code="a">Grups, Teoria dels</subfield>
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      <subfield code="a">Combinatorial and metric properties of Thompson's group T</subfield>
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